Surveying instrument



April 24, 1928. 1,667,599

T. MARIOTTI SURVEYING I NSTRUMENT April 24. 192s` l 1,667,599

T. MARIOTTI SURVEYING I NSTRUMENT File'd April 21. 1926 e sheets-sheet 2I jig' 2l INVENTOR ATTORNEY VVITNESW' April Z4, 1928. v 1,667,599

v 1 T. MARIO-m SURVEYITG INSTRUMENT 6 Sheets-Sheet 4I5 Filed Avril 2l.1926 BY @aa/1u wlmassr WM ATTORNEY April 24. '1928.

T. MARIOTTI SURVEYING I NSTRUMENT Filed April 21. 1926 6 Sheets-Sheet 4Wllllllll/I MSN nifl/la ATTORNEY Apri1z4. 192s. 1,667,599

T. MARIOTTI SURVEYING INSTRUMENT Filed Abril 21. 1926 6 Sheets-Sheet 5`INVENTOR vSY WITNESSWWM Arron-Nav April 24, 1928. l667,599

T. MARIOET;

SURVEYING INSTRUMENT Filed April 2l. 1926 6 Sheets-Sheet 6 telescopesand indicatino` Patented Apr. 2li, 1.928.

UNITED S'IHTFNS OFFICE.

TONY MARIOITI, 0F LORAIN, OHIO.

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Application tiled April 21, 1926. Serial No. 103,544.

This invention relates to a surveying device, the general object ot theinvention being to provide means tor measuring l1ori Zontal distances bythe use ot two or more means, with means for operating the `indicatingmeans by the movement of one telescope in the focussing of suchtelescope on an object on which an other telescope has been focussed.

Another object Ot the invention is to provide means for .attaching thedevice to the horizontal axis of a transit so that the device can beused in conjunction with the transit.

This invention also consists in certain other features ot constructionand in the claims.

In describing my invention in detail, reterence will be had to theaccompanying drawings wherein like characters denote like `orcorresponding partsthroughout the sev `eral views, and

Figure l is a plan view ot' the device attached to a transit.

Figure 2 is a rear view ot Figure` 1. H Figure 8 is a side view otFigure 1.

Figure 4 is a view, with parts in section, of thesliding member and itsadjustable end parts.

Figure 5 is a section on line 5-5 `oli Figure 1.

. Figure 9 is` a perspective View ot the toothed segment and thetelescopic support ing member to which it is attached.

Figure l0` is Figure 1.

Figurell is plate.

. Figure 12is and its pinion6 sini-ne is a section online 101() ot ayview of the` dial carrying a view ot the circular dial n ttragnxientaiufview means ot a set screw 7 rotatably mounted `means for connecting oneside of a transit support to the device.

Figure 14 is a section Figure 13.

Figure 15 is a perspective view of the connecting bolt.

Figure 16 is a view ot the opposite side ot the connecting means.

Figure 1'? is a section on line 17-17 of Figure 16.

Figure 18 is a diagrammatic view ShowinnI how the device is used.

ln these views, 1 indicates the table of the transit and 2 the uprightsthereon vfor supporting the hub 3 oit the telescope 4. This hub isprovided' with the depending arm 5 which is engaged by the adjustingscrews 6 for adjusting the telescope in the usual manner. As these partsare of w'ell known construction, they will not be de scribed in detail.

ln carrying out my invention, I detachably mount the hub 3 in theuprights 2 through on line 14-14 of in one of the legs 2 and engaging athreaded hole in one end of the hub and a bolt 8 which is mounted in theother upright and haspins 9 thereon tor engaging holes in the oppositeend of the hub. Thus by unscrewing the set screw 7 from the end oi thehub and tilting the hub, the opposite end ot the` hub canbe freed fromthe pins 9. The device torming the `subject matter of the invention, isdetachably connected with the upper ends of the uprights 2 by thesemembers 7 and 8, as one of the uprights 10 is held against an upright 2by the bolts 7, as shown in Figure 1'?, while the other upright 10 issupported by a square part 11 ot the `bolt 8, this bolt having a roundedpart 12 which engages the upright 2 so that the bolt can rotate in theupright and a square part 13 for receiving the wheel 14- of the transitso that the wheel must rotate with the bolt. The arm 5 is clamped to theenlarged head of the bolt. A nut 15, engaging the threaded end ot thebolt, holds the parts assembled and by tightening the two set screws,the uprights 10 4will be held in adjusted position on the, transit; l

:it horiaontal trarne connected. `with lilik supporting member 25 ispivotedat itsrear end to ythe frame 1G, as shown at 26, each l*5"0 theseframes consisting ot a pair of long ba1s27 connected together in spacedrelation by the end"'piecef=28, the end'pieces being connected to thebars, as shown in Figure 8. The pivotal vvend of the trame 25 carries an toothed segment 29 which meshes with a pinion 30 onV a dislr-lilredial member 31 which is rotatably supported on a plate 31 to which thepivot 26 is att-ached. This plate is adjustably connected with thetraine 16 through the'pin and slot connections shown generally at 32 andcarries an arc-shaped scale 33`which ,cooperates with one of the longbars27uof themember 25. A pointer '34'islocated`at oneend of the scale33 and ^`fcooperates with, the dial 31. The bar 27 of th'ejirame 25which cooperates with the scale 33'is adjustable in its end piecethrough "means ofthe set screw 85 in the end piece 28"vvhich is of yokeshape and receives the 35 yend of said piece 27 A; guide rod`36issupported in spaced relationon'the'frame 16 and similar ro'ds 37 arearrangedY one on each side ot said rod 36. A member 38 is-slidablyarranged on the rod 40 36' and hasy anlarm 391 connected with each sidethereof,v these armshavingv depending; perforated 1ears 4101201.'engaging the rods 37. A" casi-ng il is adjustably connected fwith theouterfend 'ol-each arm 39 by the slot and set screw connection 42landveaclr casing carries a pair oil ulley's t'which engage the innerrodfloflea of the 'frames 23 and 25. r)Thus as the member 88 audits arms39 are moved on'tlie frame, the members 23 and 25 will be movedltowardor from each other, accord-ing tothe direction of movement of themember 38 andthis movement ofthe trame 25 will rotatetheI dial31throug-li the segment 29 andthe pinion 30, and the traine 2.51-willl lalso pass over they scale 33, the parts being vso arranged; that ii'oreach rotation of the dial 31, the outer bar 27 ot the Frame 25 willymove toa new ligureon the scale so that this barand the scale willindicate the` number of en rotations madel by the dial 31 during the"movement of the parts. The adjustments mentioned'wi-l'lpermit' theparts to be properly-setso th-atzth'ey will-cooperate with each other inthe proper manner. 1t will also be a5" seen'thatA as the 'trame `2?moves, the telescope 1S will also be moved and thus the movement ot saidtelescope 1S to focus it on an object will operate theindicatingmechanism composed of the dial and scale, before described,and such means are so arranged that they will indicato the distancebetween a point on which the device sets and a point on which thetelescopes 17 and 18 are 'focuesed.

The member SS is moved by hand to the approximate position to toons thetelescope 18 and then the rest of the movement is made by the set screw441-. which passes through a threaded hole in a block L15 carried by thebar 36, with the end oft the, screw 4.4 fastened to the member 38; Theblock /15 is held in adjusted position on the har SG by the set screwfl-G. This arrangement permits a fine adjustment ot the member 'for thefinal focussing o'l'i the telecscope 18.

rllhe frame 16 is provided with n spirit level 41'? and one ot thelevels onr the table 1 is shown at 11S;

)Vith this device, the horizontal distance between two points can bereadily ascertained. by simply 'focussing the two telescopes 17 and 18on an object, the indicating,a mechanism giving the distance accordingto the amountoi movement ot the telescope 18. The attachment can beeasily and quickly I attached to a transitand itisadjusted with thetransit.

rthis instrument may bc used either in preliminary or location surveys,and is especially valuable for the llilotting of contour maps.

The operation oi the device` is based on the ilundame'ntal formulae oftrigonometry, as illustrated diagramn'iatically in Figure 18;

Referring `to this Figure7 "V, is the stationary telescope and T, is the:nljustablo` teloscope which pivots at the point 'IPT'. S is the objector marlrl sighted by the observer. Considering);- that. the distanceP11132 is the constant of the instrument, the tollowii'igr formulae arocvolived: l

(3) P1P==SP2 sin; affidi, cos P.

(it) Dividinghy (3).

(ti) i SP1==P1P2 tan B.

Since Pllglis a constant ot the iii:nzrlnnenty and angle P is determinedby the instrument, it is manifestly easy to seo that distances may beproperlygradiiated on thc dial and arc-shaped scales in accordance withthe last of the formulae indicated above.

It is thought trom the foregoing description that the advantages andnovel 'features ott my invention will be readily apparent.

l' desire it to be understood 'that l may make changes in theconstruction and in the combination and arrangement of the severalparts, provided that such changes :tall Within the scopeof the appendedclaims.

What I claim is z- 1. An instrument of the class described comprising asupporting frame, a telecope connected with one side of the frame, anelongated frame pivotally supported at its front end to the main frame,a telescope carried by said elongated frame, a second elongated framepivotally connected with the main frame at its rear elichindicatingmechanism operated by the movement ot the eecond elongated frame, asliding member Supported on the main frame and movably connected Withthe, elongated frames so that movement ofthe sliding member will actuatethe elongated frames and means for securing fine adjustment of tbesliding member after the same has been moved by hand.

2. An instrument of the class described comprising a supporting frame, atelescope frame, a Second elongated frame having its rear end pivotallyconnected with the main frame, manually operated means for moving theframes in unison, a rotary dial, means for rotatingthe same by themovement of the second elongated frame and a pointer associated with thedial.

3. An instrument of the class described comprising a support-ing frame,a telescope supported at one side of the frame, an elongated framehaving its front end pivotally connected With ,the main frame, atelescope adjustably connected with the elongated frame, a secondelongated frame having its rear end pivotally connected with the mainframe, manually operated means for moving the :trames in unison, arotary dial, means Jfor rotating the same by the movement of the secondelongated frame, a pointer aseociated with the dial, a scale over whicha part of the second elongated frame passes for indicating the number ofrotations made `by the rotary dial and means for adjusting said part ofthe elongated frame. In testimony whereof I aliX my signature.

TONY MARIOTTI.

